cgroup: net_cls: Remove rcu_read_lock/unlock
As Eric pointed out: "Hey task_cls_classid() has its own rcu protection since commit3fb5a99191
(cls_cgroup: Fix rcu lockdep warning) So we can safely revert Paul commit (1144182a87
) (We no longer need rcu_read_lock/unlock here)" Signed-off-by: Daniel Wagner <daniel.wagner@bmw-carit.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Glauber Costa <glommer@parallels.com> Cc: Li Zefan <lizefan@huawei.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Tejun Heo <tj@kernel.org> Cc: netdev@vger.kernel.org Cc: cgroups@vger.kernel.org Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1221,9 +1221,7 @@ void sock_update_classid(struct sock *sk)
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{
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u32 classid;
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rcu_read_lock(); /* doing current task, which cannot vanish. */
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classid = task_cls_classid(current);
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rcu_read_unlock();
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if (classid != sk->sk_classid)
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sk->sk_classid = classid;
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}
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